{"date_created":"2021-09-16T10:17:11Z","file_date_updated":"2022-01-06T13:20:31Z","keyword":["AC-modules","Microinverter","Power Conditioning","Efficiency","Yield","PV module size","saturation","performance"],"abstract":[{"lang":"eng","text":"Efficiencies and energy yields of microinverters available on the market during 2014‒2021 have been \r\nmeasured, compared, and ranked. Conversion efficiencies as a function of load have been measured indoors with high \r\naccuracy and ranked according to Euro- and CEC weightings. Energy yields have been measured outdoors via \r\nidentical and calibrated crystalline silicon PV modules of 215 Wp (until 2020) and 360 Wp (starting 2021). Inverters \r\nwith two inputs have been fed by two of those modules. DC input, AC power output and energy yield of each micro\u0002inverter have been recorded by individual calibrated electricity meters. CEC and EU efficiency rankings have been \r\ncomputed and compared. To assess the influence of PV module size, two extremes have been investigated: A rather \r\nsmall module with 215 Wp - as it has been used 10 years ago, and a brand-new module (2021) offering 360 Wp. Both \r\ntypes of modules contain 60 solar cells in series connection. Appling the low-power modules, the challenge for the \r\ndifferent micro-inverters has been during weak-light conditions, using the high-power modules, some inverters \r\ntemporarily reach their power limits and yield is reduced. A method using a reference configuration of inverter & \r\nmodule and a linear equation y = ax + b resulting in the actual yield, any module & inverter configuration can be \r\ncharacterized by just the coefficients a and b."}],"quality_controlled":"1","has_accepted_license":"1","file":[{"success":1,"file_id":"29175","file_name":"Krauter Bendfeld - Module size Microinverters - EUPVSEC 2021.pdf","access_level":"closed","content_type":"application/pdf","relation":"main_file","date_created":"2022-01-06T13:20:31Z","date_updated":"2022-01-06T13:20:31Z","creator":"krauter","file_size":5413518}],"page":"659 - 663","doi":"10.4229/EUPVSEC20212021-4CO.3.4","publication_status":"published","ddc":["620"],"citation":{"mla":"Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields.” <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 2021, pp. 659–63, doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>.","ama":"Krauter S, Bendfeld J. Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields. In: <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>. ; 2021:659-663. doi:<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>","bibtex":"@inproceedings{Krauter_Bendfeld_2021, title={Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields}, DOI={<a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>}, booktitle={Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2021}, pages={659–663} }","ieee":"S. Krauter and J. Bendfeld, “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields,” in <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 2021, pp. 659–663, doi: <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">10.4229/EUPVSEC20212021-4CO.3.4</a>.","short":"S. Krauter, J. Bendfeld, in: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021), 2021, pp. 659–663.","apa":"Krauter, S., &#38; Bendfeld, J. (2021). Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields. <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 659–663. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4</a>","chicago":"Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields.” In <i>Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)</i>, 659–63, 2021. <a href=\"https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4\">https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4</a>."},"user_id":"28836","publication_identifier":{"isbn":["3-936338-78-7"]},"department":[{"_id":"53"}],"_id":"24550","title":"Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields","author":[{"full_name":"Krauter, Stefan","id":"28836","last_name":"Krauter","first_name":"Stefan","orcid":"0000-0002-3594-260X"},{"last_name":"Bendfeld","id":"16148","full_name":"Bendfeld, Jörg","first_name":"Jörg"}],"year":"2021","status":"public","conference":{"start_date":"2021-09-06","end_date":"2021-09-10","name":"38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)"},"publication":"Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)","type":"conference","date_updated":"2022-01-06T13:22:03Z","language":[{"iso":"eng"}]}